Armored concrete floor.



PATENTED JULY '28,

[Rt M. MoDOWALL. ARMORED CON CRETE FLOOR.

APPLICATION FILED NOV. 6, 1002.

N0 MODEL.

Wwessaszv UNITED STATES Patented July 28, 1903.

- PATENT OFFICE.

ROBERT MT. MODOWALL, OF OASTLEFQRD, ENGLAND.

ARMOREDCONCRETE FLOOR.

SIEOIFICATION forming part of Letters Patent No. 734,593, dated July 28,1903.

Application filed November 6, 1902. Serial No. 130,305. (No model.)

To all whom it may concern: I

Be it known that 1, ROBERT MOFFAT Mo- DOWALL, a subject of the King ofGreat Britsin, and a resident of Gastleford, in the county of York,England, have invented certain new and useful Improvements in Stayingand Securing Rods in Armored Concrete for Fireproof Buildings, Floors,and other Purposes, (for which I have applied for a patent in GreatBritain, No. 14,126, dated June 21, 1902,) of which the following is afull, clear, and exact specification.

This invention relates to an improved method for staying and securingrods in armored concrete for fireproof buildings, floors, and otherpurposes, the object being to form a more rigid foundation or frameworkfor the concrete. This is effected by connecting or binding the rodsemployed in armored concrete at intervals, a convenient method being theemployment of metal clips, which are clipped onto the rods, said clipsbeing formed singly or in a series. I may, if desired, use any form ofclip, that which I have found to be most suitable being a flat barhaving curved gripping portions.

Referring to the annexed drawings, Figure 1 represents an end elevationthrougha concrete fioor, showing my invention in use. Fig. 2 representsa plan viewof same, the flooring being broken away for clearness.

In constructing concrete floors I connect or bind together the ordinarytie or supporting rods a by means of bars b, preferably constructed ofsteel, said bars being so bent or shaped, as shown at c, as to formclips adapted to clip the tie .or supporting rods a, as shown. Holes orclips may be provided in the bars I), if desired, for the purpose ofsupporting upright rods for forming walls or partitions. The number ofclips 0 and the distance apart of same may vary as required, the openingto the clips being smaller than said, so that force has who applied to.place them in position, thus causing a more rigid structure thanhitherto.

By this invention it will be seen that a more rigid foundation orframework for constructing concrete floors is obtained than hitherto,the clipping-bars aforesaid being easily and readily placed in position.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, isv In armored concrete floors for fireproofbuildings and other purposes, the particular construction of same,comprising rods forming the main framing and bars having a series ofclips formed therein and adapted to clip the said rods, the opening tosaid clips RT. MT. MCDOWALL,

Witnesses: JOHN MILLER,

ANDREW THOMSON.

being'smaller than the width of the said rods,

the width of the tie or supporting rods afore-

